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Re: Tracking: Kalman Task with STT,(electron hypo) [message #11394 is a reply to message #11390] Thu, 23 December 2010 12:57 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *0-87-r.retail.telecomitalia.it
Hi,
the "right" choice is electron only if you consider a mathematical point of view... in analysis we need a better momentum reconstruction and from plots I would use muon hypothesis to have a better invariant mass peak. And it would be interesting to know why the momentum is much better in this case. Maybe also a plot of chi2/ndf would be interesting.

Moreover, "high" momenta are less sensitive to energy loss and particle hypothesis. I would be curious to see what is the difference at 0.5GeV/c.
 
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